Page 1 of 54
MINNESOTA BREATH ALCOHOL TESTING OPERATOR
CERTIFICATION EXAM – 2026/2027 COMPLETE (140)
CURRENT TESTING QUESTIONS AND CORRECT
ANSWERS WITH DETAILED RATIONALES.
ALCOHOL
Prepare for the Minnesota Breath Alcohol Testing Operator Certification Exam with this
focused practice resource. It features exam-style questions covering DataMaster DMT
operation, Minnesota Implied Consent and DWI statutes, 15-minute observation
protocols, dry gas standard verification, and BCA Forensic Science Services
procedures. An ideal study aid for law enforcement and forensic personnel looking to
reinforce key testing principles and pass their certification exam.
MULTIPLE CHOICE.
SECTION 1: OPERATOR REQUIREMENTS AND CERTIFICATION (Questions
1-20)
1. What is the minimum training requirement to become a certified breath
alcohol testing operator in Minnesota?
A) 24 hours of classroom instruction
B) 40 hours of training
C) 56 hours (7 days) at the BCA Chemical Test School
D) 80 hours of training
Answer: C
Rationale: To operate a breathalyzer in Minnesota, it is required that the
applicant attend and satisfactorily complete a BCA Chemical Test School,
consisting of a minimum of 56 hours.
2. How long is a breath alcohol testing operator certification valid in
Minnesota?
, Page 2 of 54
A) 1 year
B) 2 years
C) 3 years
D) 5 years
Answer: B (2 years)
Rationale: The BTO certification is valid for 2 years. Certification fully
expires after 730 days, requiring retaking the course if not renewed.
3. May an officer operate the breath testing instrument during the grace
period after certification expires?
A) Yes, for up to 30 days
B) Yes, for up to 60 days
C) No
D) Yes, but only with supervisor approval
Answer: C
Rationale: An officer may NOT run the breath testing instrument during
the grace period.
4. Who is authorized to conduct the required 20-minute observation
period before a breath test?
A) Any law enforcement officer
B) A certified breath alcohol testing operator only
C) A medical professional
D) Any person over 18 years of age
Answer: B
Rationale: The 20-minute observation period must be conducted by a
certified operator.
, Page 3 of 54
5. What is the primary purpose of the 20-minute observation period?
A) To allow the subject to calm down
B) To allow residual mouth alcohol to exit the system so it will not affect the
breath sample
C) To complete paperwork
D) To wait for the instrument to warm up
Answer: B
Rationale: The observation period is conducted to allow residual mouth
alcohol to exit the system so it will not affect the breath sample. The
DataMaster DMT Operator Training Manual states: "A test subject should
be observed for a minimum of 15 minutes prior to administering a breath
test to ensure nothing is placed in the mouth and nothing erupts into the
mouth".
6. What is a "certified operator" under Minnesota law?
A) Any peace officer who has completed basic training
B) A person who has completed a specialized training program in the
administration of a breath test using an approved breath test instrument and
been issued a certification number by the commissioner
C) Any person who has passed a written exam
D) A person with a medical degree
Answer: B
Rationale: "Certified operator" means a person who has completed a
specialized training program in the administration of a breath test using
an approved breath test instrument and been issued a certification
number by the commissioner.
, Page 4 of 54
7. What is the role of a Breath Test Operator (BTO)?
A) To arrest individuals suspected of DWI
B) To collect evidence by obtaining valid breath samples and using an
instrument to analyze breath samples to determine breath alcohol level
C) To calibrate breath testing instruments
D) To issue citations
Answer: B
Rationale: A BTO collects evidence by obtaining valid breath samples and
uses an instrument to analyze breath samples and determine breath
alcohol level.
8. Who is responsible for certifying breath testing instruments in
Minnesota?
A) The Minnesota Department of Health
B) The Minnesota Bureau of Criminal Apprehension (BCA) Forensic Science
Laboratory
C) The Federal Bureau of Investigation
D) The National Highway Traffic Safety Administration
Answer: B
Rationale: The BCA Forensic Science Laboratory is responsible for
certifying breath testing instruments and approving procedures.
9. What is the passing score required on the breath alcohol testing
operator certification exam?
A) 70%
B) 75%
C) 80%
MINNESOTA BREATH ALCOHOL TESTING OPERATOR
CERTIFICATION EXAM – 2026/2027 COMPLETE (140)
CURRENT TESTING QUESTIONS AND CORRECT
ANSWERS WITH DETAILED RATIONALES.
ALCOHOL
Prepare for the Minnesota Breath Alcohol Testing Operator Certification Exam with this
focused practice resource. It features exam-style questions covering DataMaster DMT
operation, Minnesota Implied Consent and DWI statutes, 15-minute observation
protocols, dry gas standard verification, and BCA Forensic Science Services
procedures. An ideal study aid for law enforcement and forensic personnel looking to
reinforce key testing principles and pass their certification exam.
MULTIPLE CHOICE.
SECTION 1: OPERATOR REQUIREMENTS AND CERTIFICATION (Questions
1-20)
1. What is the minimum training requirement to become a certified breath
alcohol testing operator in Minnesota?
A) 24 hours of classroom instruction
B) 40 hours of training
C) 56 hours (7 days) at the BCA Chemical Test School
D) 80 hours of training
Answer: C
Rationale: To operate a breathalyzer in Minnesota, it is required that the
applicant attend and satisfactorily complete a BCA Chemical Test School,
consisting of a minimum of 56 hours.
2. How long is a breath alcohol testing operator certification valid in
Minnesota?
, Page 2 of 54
A) 1 year
B) 2 years
C) 3 years
D) 5 years
Answer: B (2 years)
Rationale: The BTO certification is valid for 2 years. Certification fully
expires after 730 days, requiring retaking the course if not renewed.
3. May an officer operate the breath testing instrument during the grace
period after certification expires?
A) Yes, for up to 30 days
B) Yes, for up to 60 days
C) No
D) Yes, but only with supervisor approval
Answer: C
Rationale: An officer may NOT run the breath testing instrument during
the grace period.
4. Who is authorized to conduct the required 20-minute observation
period before a breath test?
A) Any law enforcement officer
B) A certified breath alcohol testing operator only
C) A medical professional
D) Any person over 18 years of age
Answer: B
Rationale: The 20-minute observation period must be conducted by a
certified operator.
, Page 3 of 54
5. What is the primary purpose of the 20-minute observation period?
A) To allow the subject to calm down
B) To allow residual mouth alcohol to exit the system so it will not affect the
breath sample
C) To complete paperwork
D) To wait for the instrument to warm up
Answer: B
Rationale: The observation period is conducted to allow residual mouth
alcohol to exit the system so it will not affect the breath sample. The
DataMaster DMT Operator Training Manual states: "A test subject should
be observed for a minimum of 15 minutes prior to administering a breath
test to ensure nothing is placed in the mouth and nothing erupts into the
mouth".
6. What is a "certified operator" under Minnesota law?
A) Any peace officer who has completed basic training
B) A person who has completed a specialized training program in the
administration of a breath test using an approved breath test instrument and
been issued a certification number by the commissioner
C) Any person who has passed a written exam
D) A person with a medical degree
Answer: B
Rationale: "Certified operator" means a person who has completed a
specialized training program in the administration of a breath test using
an approved breath test instrument and been issued a certification
number by the commissioner.
, Page 4 of 54
7. What is the role of a Breath Test Operator (BTO)?
A) To arrest individuals suspected of DWI
B) To collect evidence by obtaining valid breath samples and using an
instrument to analyze breath samples to determine breath alcohol level
C) To calibrate breath testing instruments
D) To issue citations
Answer: B
Rationale: A BTO collects evidence by obtaining valid breath samples and
uses an instrument to analyze breath samples and determine breath
alcohol level.
8. Who is responsible for certifying breath testing instruments in
Minnesota?
A) The Minnesota Department of Health
B) The Minnesota Bureau of Criminal Apprehension (BCA) Forensic Science
Laboratory
C) The Federal Bureau of Investigation
D) The National Highway Traffic Safety Administration
Answer: B
Rationale: The BCA Forensic Science Laboratory is responsible for
certifying breath testing instruments and approving procedures.
9. What is the passing score required on the breath alcohol testing
operator certification exam?
A) 70%
B) 75%
C) 80%
